. American journal of pharmacy. etate of lime, it is carefully roastedbefore being submitted to dry distillation. This roasting forms the sub-ject of patent No. 393,079, issued to Gustav Rumpf, of Frankfort,Germany, and assigned to Roessler and Hasslacher, of New York As Am. Jour. Pharm,>July, 18S9. > Manufacture of Chloroform. 323 shown in Fig. 1, it is done in a series of three slightly-inclinedcylindrical retorts, in which the material is continually pushedforward by revolving blades. The crude gray acetate is dropped inat a and passes along the length of the upper retort until it dro
. American journal of pharmacy. etate of lime, it is carefully roastedbefore being submitted to dry distillation. This roasting forms the sub-ject of patent No. 393,079, issued to Gustav Rumpf, of Frankfort,Germany, and assigned to Roessler and Hasslacher, of New York As Am. Jour. Pharm,>July, 18S9. > Manufacture of Chloroform. 323 shown in Fig. 1, it is done in a series of three slightly-inclinedcylindrical retorts, in which the material is continually pushedforward by revolving blades. The crude gray acetate is dropped inat a and passes along the length of the upper retort until it dropsupon the blades which revolve in the second retort, and passing alongthis is dropped into the third or lowest retort, from which it issues at g,and is collected in suitable vessels. As seen in the illustration, the in-clination of these three retorts is different, so that the material passesalong; most rapidly as it descends into the hottest retort below. At eand / are connections with the flue, through which the moisture and. Fig. 1. tarry vapors can pass off. By this continuous roasting process, thecrude material can be purified without notable decomposition of thetrue acetate. The second patent, No. 385,777, issued to the sameaud assigned to the same, refers to the method of distilling theroasted gray acetate. Here, to secure the maximum yield of acetone,the points to be attained are uniformity of temperature throughoutthe whole mass and slow heating to not over 300° C. The patenteeclaims that in the process of subjecting acetates in a closed vessel toheat applied externally to the vessel for distilling acetoue from theacetates, the desired slowness and uniformity of temperature may be 324 Manufacture of Chloroform. {Am;JS^\m&Tm secured by stirring the acetates so that all portions of the mass will besubjected to the heat resulting from direct contact with the bottom ofthe vessel and by admitting free steam from time to time into directcontact with the acetates in case of
Size: 1543px × 1620px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookidamerica, booksubjectpharmacy, bookyear1835
